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Lysine Addition and Pelleting of Diets Containing Wheat Shorts for Growing-Finishing Pigs¹

University of Guelph², Ontario

Abstract

Two growth trials were conducted with 128 Yorkshire pigs (average weight 20 kg) to determine the influence of level of wheat shorts, lysine addition and pelleting of diets on performance. A factorial arrangement was utilized that included four levels of wheat shorts (0, 32.2, 64.4 and 96.6% of the diet), two levels of lysine addition (0 and .11%) and two physical forms of the diet (meal and .63-cm pellets). Rate of gain and gain to feed ratio decreased with inclusion of wheat shorts in the diets, and the effect was more pronounced at the higher levels of wheat shorts. Additional lysine or pelleting had only a minor effect on swine performance. Digestible energy values of the diets were determined with four pigs fed each level of wheat shorts in each of the trials. Decreased digestible energy intake with increased dietary levels of wheat shorts appeared to have the largest influence on pig performance. Samples of each batch of wheat shorts used in the different trials differed in predicted digestible energy value and in acid detergent fiber content.

¹ This research was supported by the Ontario Ministry of Agriculture and Food and the National Research Council of Canada.

² Dept. of Anim. and Poul. Sci.

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